Projection apparatus for stereopticon views and cinematographic films



March 15, 1927. sgopse c. .M. Fox PROJECTION APPARATUS FOR STEREOPTIC'AN VIEWS AND CINEMATOGRAPHIC FILMS Filed May 17, 1926 2 Sheets-Sheet 1 March 15, 1927. 1,620,956. I

, c. M. FOX 1 PROJECTION APPARATUS FOR STEREOPTICAN VIEWS AND CINEMATOGRAP HIC FILMS Filed May 17. 1926 Z-Sheets-Sheei -2 Patented Mar. 15 1927.

UNITED STATES I 1,620,955 PATENT OFFI E;

I cEciL at. FOX, 01* TOLEDO, 01110, sssxeiv'on r rm: BOLLA-WAY moroa'comrniw, A.

' CORPORATION or, 01110.

, :p JECTI0N ArrARnrUsron srnnuorrrcoiv VIEWS Aim cIiinMA'roGRArmc FILMS;

Y Application 'filed May V 109,467

This invention relates to projection ap- 'paratus and more particularly to apparatus of the type whichis adapted to project cinematographic films or .stereopt-icon vlews, Objects of this invention are to provide a projection apparatus having an adjustable arrangement whereby stereopticon views can be displayed at one time and 011181113130:

graphic films atlanot-her time, asingleadjustment being suificient to adapt the appa ratus for one or .the other purpose; to provide a projection app'aratus' in which the samewsource of light may be utilized at drfferent" times for projecting cinematographic films as wella's stereopticon views; to provi-de an adjustable muzzle for a projection apparatus which when in one position en} ables the apparatus to be used for project- .ing cinematographic films and in another position enables the apparatus to be used for projecting StGIBOPtICOI} views, a reflectorbes ing employed for pro ecting the stereopt-icon views'which is movable in accordance with the adjustment of the muzzle; and to provide a-prgjection apparatus having the new and improved features of construction,

arrangement and operation hereinafter described.

7 housing 1, consists of an arc lamp havin The invention shown by way of illustra tion in' the accompanying drawingsgin wh-ich- Figure 1. is'a side elevation of a projection apparatus embodying the invention with one side wall thereof broken away; Figure 2 is a front end elevation showing the muzzle in position for displaying stereopticon views; and Figure 3 is aview similar "to Figure 2 showing the muzzle arranged for displaying cinematographic films.-

The illustrated embodiment of the invention comprises a housing 1 of sheet metal and of general rectangular form. The front end portion 2 is substantiallyfrusto-conical in shape and extending! rearwardly from the housing is a plurality of adjusting knobs 3 for adjusting the positions of the mecha nism contained within the housing for providing an eflicient projected light. The function of the various 'adjustingkn'obs will not be described inasmuch as these form no part of the present invention.-

The source of light enerated within the i beposd'electrodes 4 and 5, the electrode ing carried by an upright support and the electrode 5 being carried by a support 7.

'Thesupports 6 and-7 may be adjusted rela-- tivelytoeaeh other 'in any well known manner so as to effect a light of the required.

the housing; The muzzle 10 may be of relatively th1n metal and formed by stamping.

with this invention aimu'zzle 1O fits overthe .front end portion 2 of- To connect themuzzle 10 ,to the housing 1,

horizontal shaft 11 ,is rotatably in'ounted .in the housing 1 and extends into a boss 12 integral with the muzzle; a set screw 13 intheboss 12'enables the muzzle and shaft 11 to rotate together., It will thus be seen that the muzzle 10 may be swungin a vertical plane over the opening of tion 2. To

ment of the muzzle a lug 14; is formed thereonfor engagement'with an outwardly projecting pin 15 on the end portion 2. For limiting the upward swinging movement of the muzzle andforholding the same in this 1 position a catch 16 is adapted to engage the pin'15 as indicated in Figure Ahandle 17 may be fixed to the' muzzle for enabling the same to be readily moved. I i v The muzzle 10 is provided in one portion thereof Twithl' an opening over which fits an "outwardly extending tubular member 18 "which is secured to the muzzle by screws 19.

, When-the muzzle is swung to its upperposition, as shown in Figure 3, the center of the tubular member 18 is substantially in line with the electrodes 4 and 5 and in this position the apparatus may be used for displaying cinematographic films. In devices of this character, it is desirable to provide a; shutter so that the source of li ht may be out oitwhen desired and for t is purpose a shutter '20 ispivoted--at 21 and is provided with an operating handle 22.

When the muzzle 10 is swung downwardly with the stop 14 in engagement with the pin 15, means are provided for displaying stereopticon views. Forthis purpose an-opening v is provided in the muzzle 10 adjacent to the tubular member 181 Attached to the outer side of the muzzle 1O isan outwardlyextending member 23 ghaving a rectangular opening 24 thru; which stereopticon views the outer end portubular position is adapted to direct may be displayed. The opening 24is dis-- posed at one .side of the e1ectrodes4 and 5 and the light rays from the are lamp is pro jected thru the opening 24 in an indirect from the arc lamps thru the opening 24 in the member 23 so that stereopticon views may be displayed. The reflector 29 is provided at oneside thereof with rearwardly are rotatively mounted on a vertically disposed rod 31 carried by a bracket 32. The bracket 32 is,

extending lugs which formed with rearwardly extending arms 33 which have elongate slots 34 and screws 35 extending thru the slots 34 connect the bracket 32 to the main reflector frame 8.

A helical spring 36 is wound around the shaft 31 andhas one end bearing against the reflector 29 and the other end secured to a screw 37 on the bracket 32. This spring 7 the arclamp may be '38 whichis engaged at its inner side by a Q i wung downwardly to the position shown in.

' joint 45.

serves normally to hold the reflector 29 in operative position so directed thru the opening 24 in the member 23.

Depending from the reflector 29 is a pin horizontal rod 39 carried by a bracket 40. The bracket 40 is secured by set screws 41 to a shaft 42 and, the opposite end of the shaft' v42 is connected to a universal joint .43 and the universaljoint 43 is connected to the shaft -11 by means of a rod. 44 and universal From the above description it will be seen that'yvhen the handle"1'7\of the muzzle :10 is re 2, 'so that stereopticon views may be displayed thru the rectangular opening 24, the reflector 29 is disposed in operative position relatively-t0 the arc lamp. When it is desired to discontinue the displayingof sterethe handle 17 of the muzzle 10 may ,beswung upwardly until the catch 16 opticon views,

'ngages the pin 15 and in this position the project1on18 is properly positioned relatively .to the arc lam so that the light generated is satisfactory or displaying cine shaft .11 is rota matographic films. It will be observed that when the muzzle is swung upwardly the in a clockwise direction (Figs. 2 and 3) and this movement is transmitted thru the universal joints 45 and 43,

- rod 44, shaft 42, and rod 39 to the-depending pin 38 of the reflector 29. By this movethat the light rays from "of said openings, and means opera ment the pin 38 is engaged and the reflector 29.is swung away from the arc lamp to in-' operative position. When the handle 17 of the muzzle is again swung downwardly, the rod 39, through the connections described, 1 s moved away from the pin 38 and the coil spring 31' thereafter functions to move the I reflector 29 to operative-position so that the stereopticon views may be displayed.

It will be seen that the reflector 29 is au- I tomatically into and out of position and this movement in one direction is actuated by means of the muzzle 10 and movement in the opposite directionis controlled by movement of the muzzle. The above described con-.

struction has proved especially satisfactory and efficient for the purpose.

While I have described my improved machine in more or less detail to comply with the requirements of the statute, it is nevertheless-desired that this detailed description be considered merely as illustrativeand not as limiting, as it is to be understood that changesand modifications may be made by those skilled in this art, withoutde arting from the spirit of theinvention as de ned in the following claims.

What-I claim as new and desire to secure by Letters Patent is: 1. In a projection apparatus having a housing .and a source of light within' said provided housing, a muzzle on said housinfg or moving with a pair of openings, means sald m'uzzlef in one direction or supplemental-reflector ad acent said source another, a

of light, a connection between said muzzle and reflector for actuating said reflector awayfrom said source of light, and means for moving said reflector adjacent the source of light whensaid muzzle is moved to a predetermined position thereby rays through one 'of said openings.

2. -In' a rojection apparatus having a housing and housing, a muzzle connected-to said'housing to direct light a source of light within said and provided with a pair of openings, means for pivotally connecting said muzzle to said housing, means associated with said source of light for directing light rays through one le by movement of said muzzle for moving said light directing means away from said source i I of light.

3. In -a projection apparatus having a housing, aqnuzzle connected to one end of said housing, an outwardly extending tubular projection on saidmlizzle through whichcinematographic films may be. displayed when the muzzle is in one position, a substantially rectangular projection on said muzzle adjacent said tubular projection through which stereoptic views may be displayed when said muzzle is moved to another position, a source-0f light within said housmg, one projection beingregistrable with 'one' position,

said sourceof light when the muzzle is'in and means actuated by. move- -ment of said muzzle for directing light through the other projection when the muzzle is moved to another position.

- 1. In a projection apparatus having a housing and a source of light within said housing, a muzzle on theoute'r end 0t said housing provided with a pair of openings, means to move said muzzle to bring one or theother of said openings into the region ofsaid source of light, a pivotally mounted :reflector' adjacent said source of light, and

means connecting said muzzle and reflector whereby when sa1d muzzle is moved to one position said reflector is operatively' positioned to reflect rays from. said source through one opening-and-when said muzzle I said openings, holding said reflector in operative position,

is moved to the oppositeposition the reflector is moved-away from the-source toinoperat1ve position.

5. In a pro ection apparatus having a housing and a source of light within said housing, a muzzle connected to one end of said housing and provided with a pair of openings, a reflector adjacent said source of light for directing light raysthrough one of spring means for normally and a connection between said muzzle and said reflector for moving said reflector away from the source of light when said muzzle is moved to a predetermined position.

6. In .a projection apparatus having a housing and a source. of light within said housing, a muzzleconnected to the outerend of said housing, means for moving said muzz'le to difierent positions, a reflector adjacent ;said -source of light for directing light rays through one of said openings, means for moving sald reflector to operative posltion,

and means actuated by movement of said muzzle for moving said reflector to moperative position.

7. In a projection apparatus having a -sa1d' source of light through one of said openings, and means connecting said shaft and reflector for swinging said reflector'to inoperative posit on when the -muzzle is moved to a predetermined position.

8. In a projection apparatus having. a housing and a source of light within the housing, a muzzle pivoted to one end of said housing having openings for displaying at diflerent periods, a reflector adjacent said source of light' for directing light rays through one of said openings to display stereopticon views, means actuated by movement ofsaid muzzle for moving the reflector to one position, and means for moving the reflector to another position.

stereopticon' views and cinematographic films 9. In a projection apparatus having a housing and a source of light within said housing, a muzzle for one end of said housing and provided with a pair through which light rays may be projecte of openingls a shaft rotatably mounted in said housing a and to which said muzzle is pivotally con nected, a reflector adjacent saidsource of light, means for pivotally mounting said reflector, means including universal joints connecting said shaft and reflector whereby movement of said muzzle in one direction moves said reflector away from said source of light, and means for moving said reflector to operative position when said muzzle is swung in the opposite direction.

In testimony whereof I have hereunto signed my name to this specification.

CECIL M. FOX. 

